Fix readBuffer log msg to be clearer
Fix readBuffer log msg to be clearer

verma/PDAL,jwomeara/PDAL,boundlessgeo/PDAL,radiantbluetechnologies/PDAL,DougFirErickson/PDAL,mtCarto/PDAL,verma/PDAL,DougFirErickson/PDAL,Sciumo/PDAL,lucadelu/PDAL,mpgerlek/PDAL-old,boundlessgeo/PDAL,mpgerlek/PDAL-old,mpgerlek/PDAL-old,jwomeara/PDAL,Sciumo/PDAL,mtCarto/PDAL,radiantbluetechnologies/PDAL,Sciumo/PDAL,jwomeara/PDAL,boundlessgeo/PDAL,mpgerlek/PDAL-old,DougFirErickson/PDAL,verma/PDAL,jwomeara/PDAL,lucadelu/PDAL,verma/PDAL,verma/PDAL,radiantbluetechnologies/PDAL,verma/PDAL,lucadelu/PDAL,radiantbluetechnologies/PDAL,verma/PDAL,Sciumo/PDAL,mtCarto/PDAL,mtCarto/PDAL,DougFirErickson/PDAL,lucadelu/PDAL,boundlessgeo/PDAL